initWithTarget:self doesn't get my class to call selector - ios

Question

I create a class for dealing with dismissing keyboard
custom class:
tapReconizer.h:
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#interface tapReconizer : NSObject {
UIView* myView;
}
-(void) tapreg:(UIView*)view;
#end
tapReconizer.m:
#import "tapReconizer.h"
#implementation tapReconizer
-(void) tapreg:(UIView*)view {
myView = view;
UITapGestureRecognizer *tapGestureRecognizer;
tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(singleTap:)];
tapGestureRecognizer.numberOfTapsRequired = 1;
[myView addGestureRecognizer:tapGestureRecognizer];
}
- (void)singleTap:(UIGestureRecognizer *)recognizer {
[myView endEditing:true];
}
#end
and in my viewcontorller:
tapReconizer* reg = [[tapReconizer alloc]init];
[reg tapreg:self.view];
but it's seems singleTap: doesn't been called.
Can I do this all just in this custom class?
Thanks in advance.

Answer 1

Your tapReconizer instance (reg) gets deallocated when it goes out of scope at the end of whatever block it is created in.
You need to keep a strong reference to it. The easiest way is probably to make reg an instance variable.
FYI - you probably meant to name your class TapRecognizer. You misspelled recognizer and it is standard practice to name classes to start with uppercase letters. Method and variable names start with lowercase.

Answer 2

In your View controller
tapReconizer* reg = [[tapReconizer alloc]init];
[reg tapreg:self.view];
Here reg is getting deallocated, so make it is global for strong.
Declare it in your viewcontroller.h
#property (strong, nonatomic) TapReconizer* reg;
or in your .h or .m of view controller
after
#interface ViewController : UIViewController
{
TapReconizer* reg;
}
Hope it will help you.